Improvement in cooking-ranges



2 Shets--Sheet 2.

G. W. WALKER. Range.

Patented Apr. 18, 1871.

Ziff Jamo/TMW N.PETERS. FHOTO-LITHOGRAPHER WASHINGTON. D C.

about Seite ont om Letters Patent No. 113,952, dated April 1s, 1871.

kIMPROVEMENT IN CQOKlNG-RAN-GES.

The Schedule referred to in these Letters Patent` and making part of the same.

To all whom it may concern.-

Be it known that 1, Gnoncn W. WALKnn, of Boston, in thc county oi' Suffolk ami State of Massachusetts, have invented an Improved Cooking and Heatingltangc; and I do hereby declare that the following, taken in connection with the drawing which ac,

` air-passages through which cold air, received at the lower part of' the rangeand warmed by contact with heat-radiating plates or partitions, passes and escapes into the hot-air conducting-pipe to be by them conveyed to the apartments inwhich heated air is to be disseminated.

The invention consists, primarily, in the combination, with a fire-pot located in the front and central part of a range-body, (preferably made semi-cylindrical in i'orm,) and with ovens extending radially into said body at or near the opposite ends thereof, ot' hotair ilues or passages occupying thc segmental spaces between the lire-pot and the ovens or oven-dues, the hot-air passage on each side ofthe tire-pot being preferably divided by a vertical partition, so that thecold -air received from beneath" the range into the space next to the oven ouone side of such partition passes through such space and then around thefront end-of the partition into the spaceon the opposite side of the partition, and next to the lire-pot, and thence back through such space into a vertical space at the end of the oven and at the rear side thereof', from which space it escapes intohot-air pipes leading from the top of such space, or into a hot-air chest which surmounts the back part of the range, i'rom which chest the hotair distributing-pipes lead, the air being heated in its passage through these hot-air passages, iirst by the oven-flue plates nearest the tire-pot and the fire-pot surface, and then by the flue-plates at the ends and rear sides of the oven.

The invention further consists in combining with such an arrangement oi' fines an inclosed sub-space beneath the range, into which space the cold air is tirst received, becoming partially heated therein before it passes into the segmental hot-air ues or spaces; and

The invention further consists in separating the hotair spaces between the ovens by a central partition, so that one side of the range may be used in whole or in part for heating air, while the opposite sidemay have the inlet-passage for cold air or the outlet-passage for heated air stopped, in which case the radiated heat i'rcm the hre-pot on such side will'be employed wholly to heat the oven without absorption of the heat by a current of cool air.

The invention further consists (in combination with the system of smoke and betfair ducs) in the employment of a hot-air box or chest, covering the rear part 'of the upper plate ofthe range, so that the heat radiated by said plate aids in warming the air.

The invention further consists in the peculiar arrangement of the smoke orre-pot tiues in connection with the arrangement of hot-air passages, th smoke and other volatile products of combustion preferably passing from the lire-pot up under thc top or boiler# plate; thence over the ovens (between the oven-plates and top plate) around the ends of a partition to vertical fines at the rear sides of the ovens; thence down such fines into iiues under the rear part of each oven; and thence toward the front ends of such flucs around partitions into lines under the front part of the ovens; and thence through a fines-opening into a central flue at 'the rear part of the bottom of the range; and thence in to a Yertical flue-pipe, from which the smoke and other products oi' combustion escape into Ithe chimney, there being also thin Hue-spaces at the end of and at one side of each oven, which are kept charged with hot air from the fire-pot, but only discharge such air by its displacement r(as it becomes cool) by the heated air from the main tlues.

The drawing represents a heating and cooking-range embodying my improvements.

A shows a front view ofthe range.

B is a vertical central section.

G is a horizontal section on the irregular line x x.

D is a horizontal section on the irregular line y y.

E is a plan of one-half of the range and a section of the other half on the line .c z.

a denotes thc body of the range;

b the tire-pot, located in the front part ot' such body; and v c d two ovens, the doors e f of which open at the opposite ends of the range, cach oven being located in the body or extending radially into it and with rei'- ercnce to the lire-pot, as seen at D E.

The space between the fire-pot and thc'adjacent side of each oven forms a vertical air-chamber, which chamber I preferably divide, by a vertical partition, y, into two parts, into the part h of which nearest the oven opens an air-inlet, i, leading from the space beneath the range, or preferably from an air-chamber, it', which may extend under the whole range, the air passing through the air-passage it around the front of the partition g into the chamber l on' the other side of the partition next to the i'irefpot.

f Between the inner ends of the two opposite ovens isanoth'er central andvertieal hot-airchamber, divided, by a central partition, fm, into two chambers, n o, each chamber n or o opening out of the chamber I in front v of it, and each chamber -n or o leading into a vertical air-chambei,p, extending back of the oven, the two rear chambers occupying the space at the backof the air box, s, covering the rear part ot' the' boiler top or top platct, each chamber p opening into thc' box` hy .an opening, u, and the heated -air passing through boxes into suitable hot-air distributingpipes o leading to the apartments tn be warmed.

a top plate forming the hottdmplatc of the range, and

a' bottom'plate, .through vany suitable part of which openings are made.l to receive the cold air, the range :l y standing on a suitable base-flange orA upon' suitable feet, so that cold air can pass under it and up. These are the hot-air fines, spaces, or chambers' through vwhich the cold air received at the bottom of the Arange passesand becomes heated by contact with the heatradiating surfaces of the smoke-fines, which ues are arranged as follows:

The top of the fire-pot opens into the general fine and heating-space a under the front partei' the boiler,-

plate, and between said plate andthe'top plates of the oven and the plates coveringthe hot-airiue chambers. `This Hue-space under the front part of the boilerplate is separatedfrom the rear flue-'space b2 by a par- -tition, c2, and' the iiames and lsmoke pass around the ends of this partition into said space, heating the rear part of the bolervplate and, by means thereof, the air in the warm-air box or chest over the rear part ofthe 'lhe main volume of smokeand dame passes over the ovens into and down through vertical fines d2, (one at the rear side of each oven,)eacl 1 ue dzopening into alu'e, e2, under the `rear half of the oven, which ne is separated from a iiue, f2, under the front part of the oven, by a partition, g2, but opens into such flue ;2

I "f by an opening, Il?, at the front end of the partition.

j Each line jl at its inner end opens, through afluehole, fi?, into a central horizontai `lue,"1i;z, (the front i part of which is provided with a central partition, P,- Ato divide the space directly between two flue-holes, i2)

'and this bottom flue lc* at its rear end opens into the .vertical flue q, which passes up throngh'therear part ofthe range-body and through the hot-air boxs, and thence into the chimney. 1

lhe ues under the oven connect with vertical blind fines 'n2 o2 at the inner end and one side of the oven, these dues being kept charged with the hot products of combustion by the displacement and circulation created by the presence and passage of the eury `rents of smoke and dame through the main flues.

. space a? bandjheat thefpots placed onlthe'lboiler top andthe plate 't, and the heat'radiatedfrom the under surface of the plate-heats the air in the adjacent airchambers. n l

The dames and smoke pass'down at the -rear 'of th ovens and under the-ovens through the ues ezf, (and indirectly into the blind oven-dues n 02,) and heat the ovens and the air in theair-ehambcrs at the ends of and behind the ovens.

' `The tluesaround the ovens insure tlrefheating of the ovens .notwithstanding the currents of air passing l .around such tlues.

The bottom ues heat the bottom plate ofthe range,

(over the sub-air-chamber,) and thus the air in `suchsub-chamber becomes warmed and is prepared for cou- -tact with the hotter heatfradiating surfaces. The sub-chamber lo', extending under the range, has

It `will yreadilybe seen that, by closing vthe hot-airl distributing or outlet-pipe on either sideof the range, absorption of the heat from the radiating-plates on the same side of the range by acurrent of air will be prevented, and-the heat on said side may, therefore, be

entirely utilized to heat the oven on said side, and that by closing both hot-air outlets all the heat from the firelpot may be utilized for heating both ovens.

It will. also be seenthat in my arrangementfof the fire-pot, ovens, and main hot-air spaces I embody the m under one boiler-plate, and thereby secure .ari exceed-- ingly compact and well-disposed systemof cooking and air-heating chambers.

1. The relative arrangement of the {ire-pot b, one or more ovens, c and d, and vone or. more hot-air chambers or dues, l, the 'fire-pot, the oven or ovens, andthe air chamber or chambers being all in the same plane or under the same boiler-plate, and the hot-air chamber (or each hot-air chamberybeing between 'the lire-pot andthe adjacent-oven, both having an inlet at its bottomand an' outlet at its rear end, substantially as shown and described.

2. The fire-pot b, ovens c d, and hot-air chambers or spaces arranged in a semi-cylindricalbody, the lire-pot ,at the front, the'ovens extending radially into the body, 'and the hot-air chambers or spaces surrounding the tirepot and ovens, substantially as shown and described. d,

'3. In combination with the tire-pot, ovens, and hot air spaces, relatively arranged as described, the smokedues arranged with relation thereto, substantially-as shown and described.

4. In combination with the tire-pot, smoke-fines, ovens, and hot-'air chambers or passages,arranged as shown and described, the sub-chamberor hot-air space 7c beneath or in the bottom of the range, substantially as shown and described.

5. In combination with the nre-pct; ovens, hot-air spaces, and smokeues, the snrm'onntin'g hot-air chest or box s at the rear of the range, and covering the rear part ofthe boiler-plate. f

v6. In combination with the hot-air spaces between the ovens, the central dividingpartition, m, substantially'as shown and described.

' GEO. W. WALKER.-

Witnesses.:

FRANCIS GoULD, S. B. KIDDER. 

